CN102756137B - A kind of cutting tool - Google Patents
A kind of cutting tool Download PDFInfo
- Publication number
- CN102756137B CN102756137B CN201210266591.8A CN201210266591A CN102756137B CN 102756137 B CN102756137 B CN 102756137B CN 201210266591 A CN201210266591 A CN 201210266591A CN 102756137 B CN102756137 B CN 102756137B
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- Prior art keywords
- blade
- cutter groove
- trip bolt
- cutter
- pin
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- 238000005520 cutting process Methods 0.000 title claims abstract description 22
- 230000005489 elastic deformation Effects 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
A kind of cutting tool, comprise cutter hub, blade and trip bolt, cutter hub offers at least one group of cutter groove, cutter groove comprises cutter groove side and cutter groove bottom, cutter groove bottom offers positioning screw hole, angle between cutter groove side and cutter groove bottom is obtuse angle, one is spirally connected with the pin of internal thread hole in positioning screw hole, blade is sheathed on pin head by the groove that blade bottom surface is offered and is connected with pin by trip bolt, when trip bolt is not tightened, blade side coordinates with cutter groove contacts side surfaces, and leaves pretension gap S between blade bottom surface and cutter groove bottom; When trip bolt is tightened, blade contacts with cutter groove bottom along cutter groove side slip to blade bottom surface and coordinates, and by the madial wall compressing pin head generation elastic deformation of groove, blade is clamped between cutter groove side and pin head.The present invention have simple and compact for structure, be convenient to the advantages such as processing and fabricating, production cost are low, convenient disassembly.
Description
Technical field
The present invention relates generally to cutter field, refers in particular to a kind ofly to have the anti-cutting tool flying structure.
Background technology
Rotate in class cutting tool working angles at aluminium alloy, need the high speed of mainshaft (10000<n<35000r/min) and high cutting speed (1500<Vc<6000m/min) to improve working (machining) efficiency greatly, improve machined surface quality.In high-speed machining process, due to the huge centrifugal force produced under High Rotation Speed, cutting tip can be made to be more prone to fly out and to bring processing accident, therefore one reasonably prevent that flying structure seems particularly important to cutting tool.
Cut in industry at aluminium alloy, present most of cutting tool company all adopts cutter groove to locate bottom surface laciniation and flies out to prevent blade, such as Sandvik AB's patent publication No. a kind of cutting tool disclosed in CN1611316A, bottom its Indexable cutting inserts, locating surface is provided with zigzag locating slot.Though this structure effectively can prevent flying out of blade in working angles, but it is complex-shaped comparatively speaking, manufacture loaded down with trivial details and not easily process, the too much higher accuracy of manufacture of number of teeth needs ensures that cutting tip toothed surface and cutter groove toothed surface are fitted seamless, and difficulty of processing is relatively high.In high-speed machining process, along with the increase of cutting speed, suffered by cutting tip, centrifugal force increases gradually, because the intensity of aluminum alloy materials own is not high, laciniation can be made to be out of shape and be more prone to, thus destroy cutter.
Summary of the invention
The technical problem to be solved in the present invention is: the deficiency existed for prior art, provide a kind of simple and compact for structure, be convenient to that processing and fabricating, production cost are low, the cutting tool of convenient disassembly.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of cutting tool, comprise cutter hub, blade and trip bolt, described cutter hub offers at least one group of cutter groove, described cutter groove comprises cutter groove side and cutter groove bottom, described cutter groove bottom offers positioning screw hole, angle between described cutter groove side and cutter groove bottom is obtuse angle, one is spirally connected with the pin of internal thread hole in described positioning screw hole, described blade is sheathed on pin head by the groove that blade bottom surface is offered and is connected with pin by trip bolt, when trip bolt is not tightened, described blade side coordinates with cutter groove contacts side surfaces, and between blade bottom surface and cutter groove bottom, leave pretension gap S, when described trip bolt is tightened, described blade contacts with cutter groove bottom along cutter groove side slip to blade bottom surface and coordinates, and by the madial wall compressing pin head generation elastic deformation of described groove, blade is clamped between cutter groove side and pin head.
Described blade top surface offers the counter sink for installing trip bolt, the bearing-surface of described counter sink is curved, the ailhead end of described trip bolt is provided with taper seal face, form taper fit face near oppressing to be out of shape between the arc supporting face of side, cutter groove side and taper seal face when described trip bolt is tightened, and between trip bolt and counter sink, produce eccentric distance P.
Described eccentric distance P meets 0mm < P≤0.3mm.
Conically, described pin head is provided with the taper clamping area coordinated with cone-shaped groove to described groove.
Angle a between described cutter groove side and the bus of described cone-shaped groove meets 15 °≤a≤30 °.
Compared with prior art, the invention has the advantages that: cutting tool of the present invention, pin is forced to produce elastic deformation by tightening trip bolt, and utilize the elastic deformation of pin by blade pressing between pin and cutter groove side, thus prevent blade from flying out in working angles, it is anti-fly simple and compact for structure, be convenient to processing and fabricating, production cost is low, as long as back out trip bolt during removal of inserts, dismantles very convenient.After trip bolt is tightened, blade and trip bolt and pin coordinate the cooperation being taper surface, improve the stability of cutter, decrease point of a knife rising phenomenon.
Accompanying drawing explanation
Fig. 1 is detonation configuration schematic diagram of the present invention.
Fig. 2 is the broken section structural representation of the present invention before trip bolt is tightened.
Fig. 3 is the broken section structural representation of the present invention after trip bolt is tightened.
Marginal data: 1, cutter hub; 11, cutter groove; 111, cutter groove side; 112, cutter groove bottom; 12, positioning screw hole; 2, blade; 21, blade side; 22, blade bottom surface; 23, blade top surface; 24, groove; 25, counter sink; 251, bearing-surface; 3, trip bolt; 31, taper seal face; 4, pin; 41, internal thread hole; 42, taper clamping area; 5, taper fit face.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of cutting tool embodiment of the present invention, comprises cutter hub 1, blade 2 and trip bolt 3, the blade side 21 that blade 2 comprises blade bottom surface 22, blade top surface 23 and is connected between blade bottom surface 22 and blade top surface 23.Cutter hub 1 offers the cutter groove 11 that at least one group is used for installing blade 2, cutter groove 11 comprises cutter groove side 111 and cutter groove bottom 112, and cutter groove bottom 112 offers positioning screw hole 12, and the angle between cutter groove side 111 and cutter groove bottom 112 is obtuse angle.Be spirally connected one in positioning screw hole 12 with the pin 4 of internal thread hole 41, blade 2 is sheathed on pin 4 head by the groove 24 that blade bottom surface 22 is offered, then realizes the connection with pin 4 by being screwed into by trip bolt 3 in internal thread hole 41.When trip bolt 3 is not tightened, blade side 21 contacts with cutter groove side 111 and coordinates, and leaves pretension gap S between blade bottom surface 22 and cutter groove bottom 112; When starting to tighten trip bolt 3, blade 2 slides along cutter groove side 111, coordinate until blade bottom surface 22 contacts with cutter groove bottom 112, while blade 2 slides, oppress pin 4 head by the madial wall of groove 24 and produce elastic deformation, blade 2 is clamped between cutter groove side 111 and pin 4 head.
In the present embodiment, blade top surface 23 offers the counter sink 25 for installing trip bolt 3, and the bearing-surface 251 of counter sink 25 is curved, and the ailhead end of trip bolt 3 is provided with taper seal face 31.When trip bolt 3 is tightened, along with the slip of blade 2, taper fit face 5 is formed near oppressing to be out of shape between the arc supporting face 251 and taper seal face 31 of side, cutter groove side 111, and there is space away between the arc supporting face 251 of side, cutter groove side 111 and taper seal face 31, make to produce eccentric distance P between trip bolt 3 and counter sink 25.And tightening further along with trip bolt 3, eccentric distance P increases gradually, and coordinate until blade bottom surface 22 contacts with cutter groove bottom 112, P reaches 0.15mm.Increase due to eccentric distance P makes the deflection of pin 4 increase, and the elastic deformation of trip bolt 3 is less, thus decrease the bending stress of trip bolt 3, so, the common compression of trip bolt 3 and pin 4, not only increase the reliability and stability that blade 2 is located, simultaneously also correspondingly to decrease in the past only by thrust and the elastic deformation of trip bolt 3 alone bear, serve the effect of the power of unloading.
In the present embodiment, the groove 24 of cutter groove bottom 112 conically, pin 4 head is provided with the taper clamping area 42 coordinated with cone-shaped groove 24, angle between the bus of cone-shaped groove 24 and cutter groove side 111 is a, a=20 °, more reasonably to carry out clamping and positioning to blade 2, the contact area utilizing inclined-plane and taper surface clamping not only to add location but also the pretension being convenient to blade 2 slide and prevent blade 2 stuck in cutter groove 11.After trip bolt 3 is tightened, blade 2 is located jointly by cutter groove side 111, cutter groove bottom 112 and taper clamping area 42, blade 2 is installed more firm, not easily flies out.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (4)
1. a cutting tool, comprise cutter hub (1), blade (2) and trip bolt (3), described blade (2) comprises blade bottom surface (22), blade top surface (23) and the blade side (21) be connected between blade bottom surface (22) and blade top surface (23), described cutter hub (1) offers at least one group of cutter groove (11), described cutter groove (11) comprises cutter groove side (111) and cutter groove bottom (112), described cutter groove (11) bottom surface offers positioning screw hole (12), it is characterized in that: the angle between described cutter groove side (111) and cutter groove bottom (112) is obtuse angle, one is spirally connected with the pin (4) of internal thread hole (41) in described positioning screw hole (12), described blade (2) is sheathed on pin (4) head by the groove (24) that blade bottom surface (22) are offered and is connected with pin (4) by trip bolt (3), when trip bolt (3) is not tightened, described blade side (21) contacts with cutter groove side (111) and coordinates, and leave pretension gap S between blade bottom surface (22) and cutter groove bottom (112), when described trip bolt (3) is tightened, described blade (2) slides into blade bottom surface (22) and contacts with cutter groove bottom (112) and coordinate along cutter groove side (111), and oppresses pin (4) head by the madial wall of described groove (24) and produce elastic deformation blade (2) is clamped between cutter groove side (111) and pin (4) head
,conically, described pin (4) head is provided with the taper clamping area (42) coordinated with cone-shaped groove (24) to described groove (24).
2. cutting tool according to claim 1, it is characterized in that: described blade top surface (23) offers the counter sink (25) for installing trip bolt (3), the bearing-surface (251) of described counter sink (25) is curved, the ailhead end of described trip bolt (3) is provided with taper seal face (31), taper fit face (5) is formed near oppressing to be out of shape between the arc supporting face (251) of cutter groove side (111) side and taper seal face (31) when described trip bolt (3) is tightened, and produce eccentric distance P between trip bolt (3) and counter sink (25).
3. cutting tool according to claim 2, is characterized in that: described eccentric distance P meets 0mm < P≤0.3mm.
4. cutting tool according to claim 1, is characterized in that: the angle a between the bus of described cutter groove side (111) and described cone-shaped groove (24) meets 15 °≤a≤30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210266591.8A CN102756137B (en) | 2012-07-30 | 2012-07-30 | A kind of cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210266591.8A CN102756137B (en) | 2012-07-30 | 2012-07-30 | A kind of cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102756137A CN102756137A (en) | 2012-10-31 |
| CN102756137B true CN102756137B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210266591.8A Active CN102756137B (en) | 2012-07-30 | 2012-07-30 | A kind of cutting tool |
Country Status (1)
| Country | Link |
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| CN (1) | CN102756137B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113275635B (en) * | 2021-05-21 | 2022-10-11 | 株洲华锐精密工具股份有限公司 | Cutting tool |
| DE102022104671A1 (en) | 2022-02-28 | 2023-08-31 | Gühring KG | Clamping device for clamping a cutting tool in a tool carrier |
| CN116422947A (en) * | 2023-03-27 | 2023-07-14 | 无锡方寸工具有限公司 | Drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2002273A (en) * | 1977-08-12 | 1979-02-21 | Krupp Gmbh | Cutting tool |
| CN101774033A (en) * | 2010-01-19 | 2010-07-14 | 株洲钻石切削刀具股份有限公司 | Fastening structure for blade assembly |
| CN101992305A (en) * | 2010-11-05 | 2011-03-30 | 株洲钻石切削刀具股份有限公司 | Balance adjustable cutting tool |
| CN102000845A (en) * | 2010-11-05 | 2011-04-06 | 株洲钻石切削刀具股份有限公司 | Balance-adjustable cutting tool |
| CN102416506A (en) * | 2011-12-09 | 2012-04-18 | 株洲钻石切削刀具股份有限公司 | Cutting tool |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3147762B2 (en) * | 1996-01-31 | 2001-03-19 | 三菱マテリアル株式会社 | Clamp mechanism for indexable inserts |
| SE530082C2 (en) * | 2006-05-31 | 2008-02-26 | Seco Tools Ab | Cutting tool with device for determining the position of insert and method for fixing insert in select position |
-
2012
- 2012-07-30 CN CN201210266591.8A patent/CN102756137B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2002273A (en) * | 1977-08-12 | 1979-02-21 | Krupp Gmbh | Cutting tool |
| CN101774033A (en) * | 2010-01-19 | 2010-07-14 | 株洲钻石切削刀具股份有限公司 | Fastening structure for blade assembly |
| CN101992305A (en) * | 2010-11-05 | 2011-03-30 | 株洲钻石切削刀具股份有限公司 | Balance adjustable cutting tool |
| CN102000845A (en) * | 2010-11-05 | 2011-04-06 | 株洲钻石切削刀具股份有限公司 | Balance-adjustable cutting tool |
| CN102416506A (en) * | 2011-12-09 | 2012-04-18 | 株洲钻石切削刀具股份有限公司 | Cutting tool |
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| Publication number | Publication date |
|---|---|
| CN102756137A (en) | 2012-10-31 |
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